Def. pub.
container end having easy-ofening means



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Apr.11, 196B. 849 0.0. 1221. Identiflcation is by serial number or theapplication and the heading indicates the number or pages orspecification, including claims, and 0! sheets 0! drawing contained inthe application as originally flied. 'lbe tile 01' this application isavailable to the public 101' inspection reproduction may be purchasedfor 80 cents per sheet.

Applications published under the Defensive Publication Program have notbeen examined as to the merits of alleged invention. The Patent Ofiicemakes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 16, lillil) A metal container panel provided with atear-out section defined by a first score line, and with ananti-fracture score line adjacent the first score line on one or bothsides thereof through less metal thickness than the first score line toprevent fracturing of the metal in the container panel. The tear-outsection may be of a variety of configurations such as spiral, teardropor full panel pull-out, and the anti-fracture score line can be formedeither along preselected lengths of the first score line may or may notbe parallel to the first score line, and is particularly beneficial whenformed along junctions and sharp corners in the first score line. Atear-out section in a container panel may be formed by supporting thepanel on an anvil die, scoring the metal to a substantial depth by meansof a scoring rib which causes the metal to be displaced and extruded,and while scoring is continued to the final desired depth,simultaneously scoring the metal adjacent and in close proximity to thefirst score line with an indentor to form an anti-fracture score andthereby trapping the extruded metal between the scoring rib andindcntor.

793.23! Sept. 16, 1969 DUNN DEF. PUB.

CONTAINER END HAVING EASY-OPENING MEANS Original Filed Oct. 5. 1966 3Sheets-Sheet 1 INVENTOR. 44am G. OUNAL Sept. 16, 1969 L. G DUNN DEF.PUB.

CONTAINER END HAVING EASY-OPENING MEANS Original Filed Oct. 5, 1966 I5Sheets-Sheet z INVENTOR. LL r0 G. Du/v/V.

BY WQM}.

CONTAINER END HAVING EASY-OPENING MEANS Original Filed Oct. 5, 1966 I5Sheets-Sheet 5 JNVENTOR. LLOYO G, DUNM BY WQWWQ.

